package com.itheima.security;

import com.alibaba.dubbo.config.annotation.Reference;
import com.itheima.pojo.Permission;
import com.itheima.pojo.Role;
import com.itheima.pojo.SysUser;
import com.itheima.service.UserService;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.authority.SimpleGrantedAuthority;
import org.springframework.security.core.userdetails.User;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.core.userdetails.UsernameNotFoundException;

import java.util.ArrayList;
import java.util.List;

public class SecurityConfigService implements UserDetailsService {
    @Reference
    UserService userService;

    @Override
    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
           SysUser sysUser= userService.findByname(username);
           if (sysUser==null){return null;}
        List<GrantedAuthority> grantedAuthorityList=new ArrayList<>();
        for (Role role : sysUser.getRoles()) {
            for (Permission permission : role.getPermissions()) {
                SimpleGrantedAuthority simpleGrantedAuthority=new SimpleGrantedAuthority(permission.getKeyword());
                grantedAuthorityList.add(simpleGrantedAuthority);
            }
        }
        User user=new User(sysUser.getUsername(),sysUser.getPassword(),grantedAuthorityList);
        return user;
    }
}
